CN101242696B - Self-adapted car headlight control device - Google Patents
Self-adapted car headlight control device Download PDFInfo
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- CN101242696B CN101242696B CN2008100064968A CN200810006496A CN101242696B CN 101242696 B CN101242696 B CN 101242696B CN 2008100064968 A CN2008100064968 A CN 2008100064968A CN 200810006496 A CN200810006496 A CN 200810006496A CN 101242696 B CN101242696 B CN 101242696B
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Abstract
A adaptive automobile light controlling device, which pertains to automobile electronic technical field. The device includes a signal perception part, decision control part and security execution part; wherein the signal perception part apperceives vehicle moving status and driving status, then transmits signals to decision control part; decision control part carries out logic judgment and process, if it is not beneficial to driving security, security execution is started, namely opens LED array for auxiliary lightening; security execution part executes information decision control part decide to execute. The inventive vehicle light is arranged to form a definite radian at front side of the vehicle. It is possible to adjust amount of opening LED lights according to turning angle of vehicle, so as to expand vision of driver. The invention can also intelligently judge whether to open radian illumination light, and distracting driver's attention is avoided. Threshold to intelligently open the light is adjustable, which makes the invention flexible and humanized.
Description
Technical field
Self-adapted car headlight control device belongs to automobile lamp and control setup technical field thereof.
Background technology
The existing market car headlight that exists of getting on the car is mainly xenon vehicle lamp, and lacks self adaptation lighting engineering easy to utilize.
Automobile turns to when travelling under night or other light bad conditions, often because the generation that the sighting distance of steerman is short, the visual field causes traffic accident for a short time, the illumination that is automobile has certain dead angle when turning to, as shown in Figure 1 (dead angle scheme drawing when Fig. 1 is motor turning).
At the problems referred to above, existing solution is commonly to use has the self adaptation car light technology of mechanical transmission structure, and promptly car light rotates along with turning to, thereby reaches the purpose that illumination direction rotates thereupon.But, since this enforcement body's complexity, the cost height, technical risk is big, and difficulty is applied.In addition, also the someone proposes to increase the solution that assist illuminator is eliminated the illumination dead angle, but this technology needs vehicle body is carried out bigger change, and lack of wisdom control, can not change the floor light direction along with the variation of deflection angle.
Along with further developing of automotive lighting technology, the great power LED car light have the illumination energy consumption little, quality is good, the grade advantages of higher is about to replace present xenon vehicle lamp, become the 4th generation automotive luminaire.
In sum, the intellectuality of automotive lighting technology, low energy consumption, high-qualityly become main development tendency gradually.
Summary of the invention
The objective of the invention is to propose a kind of self adaptation headlight control device.This device is based on great power LED car light design, can not only strengthen chaufeur when turning to vehicle side to perception, and possess advantages such as cost is low, intelligent, high efficiency lf illumination, easy to utilize.
Apparatus of the present invention can judge whether to open the LED car light of radian illumination according to extraneous light intensity signal intelligent.When light is more weak, open side radian LED floor light function.Not only save the energy, and need not manual operation, avoid disperseing the chaufeur attention.
Self-adapted car headlight control device, this device comprise signal perception part, Decision Control partial sum safety operating part;
The signal perception partly by photosensor technology perception driving states and vehicle running state, is sent to the Decision Control part to coherent signal then; SCM program by Decision Control carries out logic determines and processing, if be unfavorable for traffic safety, then enables safe execution, promptly opens the led array of floor light; Install safe operating part by chip for driving and great power LED car light lamp Shu Zucheng, LED lamp bundle is arranged in radian at the leading flank of vehicle; Safe operating part is carried out the information that Decision Control is partly made a strategic decision and carried out; It is characterized in that described signal perception part comprises electronics package resistance R 1, capacitor C 1, C2, current limliting diode D1, variable resistance Rx and photoconductive cell RL; Wherein,
Photoconductive cell RL and variable resistance Rx are composed in series light strong and weak signals perception circuit: photoconductive cell RL one end ground connection, and the termination voltage VCC of variable resistance Rc, photoconductive cell RL partly links to each other with described Decision Control with variable resistance Rx bonded assembly common port;
Resistance R 1, capacitor C 1, C2, current limliting diode D1 form steering angle signal perception circuit: resistance R 1 links to each other current limliting diode D1 negative pole power connection with current limliting diode D1 is anodal; Resistance R 1 and the public termination vehicle electrical of capacitor C 1 bonded assembly road signal system; Capacitor C 1, C2 connect common ground; Capacitor C 2 and the anodal described Decision Control part of public termination that is connected of current limliting diode D1;
Described Decision Control partly is the 8-bit microcontroller MC9S08DZ60 of Motorola;
Described safe operating part comprises drive integrated circult MC1413 and seven led array of DS1～DS7;
Seven led array of drive integrated circult MC1413 and DS1～DS7 link to each other, and drive integrated circult MC1413 drives seven led array of DS1～DS7; Seven pins of IN1～IN7 of MC1413 link to each other with 7 IO mouths of micro controller system, with the switching of control led array lamp.
This device can be according to the varying sensitivity of chaufeur to light sensing, and the strong and weak critical value that triggers of the extraneous light signal of manual regulation makes this system have more human oriented design.For example, if chaufeur is responsive inadequately to the perception of light, think when triggering Based Intelligent Control light too a little less than, can be by the rheostatic knob of manual rotational slide, the critical value of increase light power triggers intelligence control system under stronger light condition.
Can be according to the variation at Vehicular turn angle and intelligence is adjusted the LED car light and opened number, and then the illumination radian of side is changed along with the change of deflection angle, thus the expansion chaufeur turns to the visual field.
This device proposes a kind of self adaptation headlight control device, need not chaufeur control, can be according to the unlatching of light intensity and deflection angle Based Intelligent Control self adaptation Lighting System.Turn to the visual field thereby can improve chaufeur well, reduce light accident rate during Vehicular turn when dark effectively.This device possesses following three characteristics:
1, this lighting car light light fixture is made up of a series of high-power and high-luminance LEDs, is arranged in certain radian at the leading flank of vehicle.Can be according to the variation at Vehicular turn angle and intelligence is adjusted the LED car light and opened number, and then the illumination radian of side is changed along with the change of deflection angle, thus the expansion chaufeur turns to the visual field.
2, apparatus of the present invention can be according to extraneous light intensity signal and Vehicular turn angle signal, and whether intelligent decision opens the LED car light of radian illumination.Not only save the energy, and need not manual operation, avoid disperseing the chaufeur attention.
3, this device can be according to the varying sensitivity of chaufeur to light sensing, and the strong and weak critical value that triggers of the extraneous light signal of manual regulation makes this system have more human oriented design.
Description of drawings
Dead angle scheme drawing during Fig. 1 motor turning.
Fig. 2 safety operating part of the present invention LED car light arrangement/light fixture scheme drawing.
Fig. 3 signal sense part of the present invention parallel circuit scheme drawing (light intensity signal and steering angle signal).
Fig. 4 Decision Control part of the present invention (micro controller system) circuit diagram.
Fig. 5 is the control method schematic flow sheet of Decision Control part of the present invention (micro controller system).
Fig. 6 safety operating part of the present invention drive integrated circult circuit diagram.
Fig. 7 is an embodiment of the present invention electrical block diagram.
The specific embodiment
Below in conjunction with figure and embodiment the invention will be further described.
The present invention includes three parts: signal perception, Decision Control and safety are carried out.Fig. 2 safety operating part of the present invention LED car light arrangement/light fixture scheme drawing.By device perception driving states and vehicle running states such as photosensors, then coherent signal is sent to the Decision Control module; SCM program by Decision Control carries out logic determines and processing, if be unfavorable for traffic safety, then enables safe execution, promptly opens the led array of floor light.
1, signal perception part
The light signal Acquisition Circuit is composed in series by photoconductive cell and variable resistance.Show Fig. 3 signal sense part of the present invention parallel circuit scheme drawing (light intensity signal and steering angle signal) as Fig. 3.The end ground connection of photoconductive cell RL, one section of variable resistance Rc meets VCC, and an IO mouth of micro controller system is connected with the common port of variable resistance Rx with photoconductive cell RL.Along with extraneous intensity variations, the photoconductive cell value also changes thereupon.When the dividing potential drop of photoconductive cell RL during greater than 3.5V, then can be used as the high level signal 1 of input micro controller system, otherwise, then be 0.Can obtain the on-off signal of light intensity power thus.Resistance value when being 3.5V by regulating variable resistance, can changing the RL dividing potential drop promptly changes the resistance value that triggers high level signal 1, thereby has regulated the critical value of light signal power.So at different chaufeurs, can regulate variable resistance Rc, different critical values is set according to its sensivity difference to the light power.
Steering angle signal can collect from the circuit signal of vehicle.In general, the steering angle signal of vehicle is the voltage signal between 0～5V, and the size of its magnitude of voltage is directly proportional with the size of the steering angle of vehicle.Here, can directly introduce steering angle signal another IO mouth of micro controller system.
2, Decision Control part
The micro controller system model of the employing here is the 8-bit microcontroller MC9S08DZ60 that Motorola Inc. produces.Fig. 4 Decision Control part of the present invention (micro controller system) circuit diagram.Wherein VDD, VSS are the digital power pin of chip; VDDA and VSSA are the analog power pin of chip; VREFH, VREFL are micro controller system digital-to-analogue and analog-to-digital reference voltage pin; VDD, VDDA, VREFH connect 5 volts of power supplys of direct current, VSS, VSSA and VREFL ground connection.2 * 3 interface among the figure (BACKGROUND HEADER) is used for this micro controller system is carried out emulation and programming.X1 is an external crystal-controlled oscillation.C1, C2 are two electric capacity.Two protective resistances of RF, Rs, the design of this crystal oscillating circuit are in order to provide work required clock signal to micro controller system.
The Single-chip Controlling logic of Decision Control module as shown in Figure 5, Fig. 5 is the control method schematic flow sheet of Decision Control of the present invention part (micro controller system).
3, safe operating part
Fig. 6 safety operating part of the present invention drive integrated circult circuit diagram.Here chip for driving has been integrated 7 tunnel multiple unit tube drives special IC MC1413.Can the various indicator lamps of direct drive, the relay lamp.IN1～IN7 of MC1413 links to each other with 7 IO mouths of micro controller system, with the switching of control led array lamp.When input end IN is high level, cooresponding delivery port will with the GND conducting, thereby make cooresponding OUT circuit form C/LOOP, promptly light corresponding LED lamp bundle.Otherwise when IN was low level, cooresponding OUT pin was unsettled, and cooresponding OUT circuit can't form C/LOOP, and LED is for extinguishing state.Each input port IN controls an array LED lamp, has controlled the LED lamp of 7 arrays altogether.
Fig. 2 safety operating part of the present invention LED car light arrangement/light fixture scheme drawing.As shown in Figure 2, the high-brightness LED car light is at the led array of vehicle front side face row certain radian.The LED lamp bundle in the place ahead is the key lighting lamp, the LED lamp bundle of side, and the columns and the deflection angle of unlatching are proportional, and light-illuminating angle and turning angle of steering wheel are complementary.
Fig. 7 is an embodiment of the present invention electrical block diagram.Self-adapted car headlight control device, this device comprise signal perception part, Decision Control partial sum safety operating part;
Described signal perception part comprises electronics package resistance R 1, capacitor C 1, C2, current limliting diode D1, variable resistance Rx and photoconductive cell RL.Light strong and weak signals perception circuit wherein is composed in series by photoconductive cell RL and variable resistance Rx: by the end ground connection of photoconductive cell RL, the termination voltage VCC of variable resistance Rc, an IO mouth of micro controller system is connected with the common port of variable resistance Rx with photoconductive cell RL, the power of light is changed into the electric signal that adapts to voltage swing with it, and this electric signal is sent to the micro controller system MC9S08DZ60 of Decision Control system.Along with extraneous intensity variations, the photoconductive cell value also changes thereupon.When the dividing potential drop of photoconductive cell RL during greater than 3.5V, then can be used as the high level signal 1 of input micro controller system, otherwise, then be 0.Can obtain the on-off signal of light intensity power thus.Resistance value when being 3.5V by regulating variable resistance, can changing the RL dividing potential drop promptly changes the resistance value that triggers high level signal 1, thereby has regulated the critical value of light signal power.So at different chaufeurs, can regulate variable resistance Rc, different critical values is set according to its sensivity difference to the light power; Steering angle signal perception circuit comprises electronics package resistance R 1, capacitor C 1, C2, and current limliting diode D1 handles the steering angle signal in the existing circuit signal of the vehicle system through the filtering noise abatement, be transferred to the micro controller system MC9S08DZ60 of Decision Control system.In general, the steering angle signal of vehicle is the voltage signal between 0～5V, and the size of its magnitude of voltage is directly proportional with the size of the steering angle of vehicle.Here, R1, D1, C1, C2 have formed the filtering noise reducing circuit, and steering angle signal is introduced another IO mouth of micro controller system after handling with the filtering noise abatement.
Described Decision Control partly is adopted as the 8-bit microcontroller MC9S08DZ60 that Motorola Inc. produces.Wherein VDD, VSS are the digital power pin of chip; VDDA and VSSA are the analog power pin of chip; VREFH, VREFL are micro controller system digital-to-analogue and analog-to-digital reference voltage pin; VDD, VDDA, VREFH connect 5 volts of power supplys of direct current, VSS, VSSA and VREFL ground connection.2 * 3 interface among the figure (BACKGROUND HEADER) is used for this micro controller system is carried out emulation and programming.X1 is an external crystal-controlled oscillation.C1, C2 are two electric capacity.R
F, two protective resistances of Rs, the design of this crystal oscillating circuit is in order to provide work required clock signal to micro controller system.The Single-chip Controlling logic of Decision Control module as shown in Figure 5, Fig. 5 is the control method schematic flow sheet of Decision Control of the present invention part (micro controller system).
The control method step of described Decision Control part is:
(1) light whether a little less than; Be that micro controller system reads in steering angle signal; , do not continue to judge the light power;
(2) gather the register of deflection angle high low signal to micro controller system;
(3) A by micro controller system the D conversion, be analog signal conversion digital signal.
(4) relatively judge the size of digital signal, make cooresponding micro controller system IO output high level:
If the steering angle signal that obtains is 5V, i.e. the vehicle steering locking angle.Thereby the digital signal that obtains changing is 1,111 1111 (bytes), then the whole assignment 1 of seven output pins of micro controller system IO, promptly drives and lights whole seven led array in side.On the contrary, if the deflection angle that obtains is 0V, promptly vehicle does not turn to, and seven pins of IO output are all put 0, seven led array and are in and extinguish state.
If be in the centre value of 0～5V, the size of the deflection angle when illumination angle and deflection angle adapt when earlier obtaining each led array by experiment and lighting.Steering angle signal magnitude of voltage V1 when promptly obtaining lighting 1 LED lamp bundle, the steering indicating light signal voltage value V2 during 2 LED lamp bundles ..., the V6 during 6 LED lamp bundles.In programming, be the reference signal voltage threshold value with V1～V6.Obtain steering indicating light signal voltage value and wherein Vi (i=1,2,3 ... 6) near the time, drive and light i LED lamp bundle.
(5) output of the corresponding IO pin of micro controller system high level drives corresponding led array, and final the realization adapts with deflection angle.Described safe operating part comprises seven led array of drive integrated circult MC1413 and DS1～DS7, and the LED car light of these 7 arrays is the high-brightness LED car light, is arranged in certain radian at the vehicle front side face.The LED lamp bundle of side, the columns and the deflection angle of unlatching are proportional, and light-illuminating angle and turning angle of steering wheel are complementary, and are assist illuminator.The chip for driving of high-power LED drive circuit has been integrated, and 7 tunnel multiple unit tube drives special IC MC1413, can the various indicator lamps of direct drive, the relay lamp.Seven pins of IN1～IN7 of MC1413 link to each other with 7 IO mouths of micro controller system, with the switching of control led array lamp.When input end IN is high level, cooresponding delivery port will with the GND conducting, thereby make cooresponding OUT circuit form C/LOOP, promptly light corresponding LED lamp bundle.Otherwise when IN was low level, cooresponding OUT pin was unsettled, and cooresponding OUT circuit can't form C/LOOP, and LED is for extinguishing state.Each input port IN controls an array LED lamp, has controlled the LED lamp of seven arrays of DS1～DS7 altogether.
Car light of the present invention is arranged in certain radian at the leading flank of vehicle.Can be according to the variation at Vehicular turn angle and intelligence is adjusted the LED car light and opened number, the expansion chaufeur turns to the visual field.Can intelligent decision whether open the radian lighting car light, avoid disperseing the chaufeur attention.This device intelligent decision turn on lights " threshold value " can be regulated, flexibly, and hommization.
Claims (2)
1. self-adapted car headlight control device, this device comprise signal perception part, Decision Control partial sum safety operating part;
Described signal perception part perception driving states and vehicle running state are sent to the Decision Control part to signal then;
Decision Control is partly carried out logic determines and processing, if be unfavorable for traffic safety, then enables safe execution, promptly opens the led array of floor light;
Safe operating part is carried out the information that Decision Control is partly made a strategic decision and carried out;
It is characterized in that described signal perception part comprises electronics package resistance R 1, capacitor C 1, C2, current limliting diode D1, variable resistance Rx and photoconductive cell RL; Wherein,
Photoconductive cell RL and variable resistance Rx are composed in series light strong and weak signals perception circuit: photoconductive cell RL one end ground connection, and the termination voltage VCC of variable resistance Rc, photoconductive cell RL partly links to each other with described Decision Control with variable resistance Rx bonded assembly common port;
Resistance R 1, capacitor C 1, C2, current limliting diode D1 form steering angle signal perception circuit: resistance R 1 links to each other current limliting diode D1 negative pole power connection with current limliting diode D1 is anodal; Resistance R 1 and the public termination vehicle electrical of capacitor C 1 bonded assembly road signal system; Capacitor C 1, C2 connect common ground; Capacitor C 2 and the anodal described Decision Control part of public termination that is connected of current limliting diode D1;
Described Decision Control partly is the 8-bit microcontroller MC9S08DZ60 of Motorola;
Described safe operating part comprises drive integrated circult MC1413 and seven led array of DS1～DS7;
Seven led array of drive integrated circult MC1413 and DS1～DS7 link to each other, and drive integrated circult MC1413 drives seven led array of DS1～DS7; Seven pins of IN1～IN7 of MC1413 link to each other with 7 IO mouths of micro controller system, with the switching of control led array lamp.
2. self-adapted car headlight control device according to claim 1 is characterized in that, described LED car light is arranged in certain radian at the vehicle front side face, and described radian is complementary light-illuminating angle and turning angle of steering wheel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100064968A CN101242696B (en) | 2008-03-18 | 2008-03-18 | Self-adapted car headlight control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100064968A CN101242696B (en) | 2008-03-18 | 2008-03-18 | Self-adapted car headlight control device |
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| CN101242696A CN101242696A (en) | 2008-08-13 |
| CN101242696B true CN101242696B (en) | 2011-08-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5348100B2 (en) * | 2010-09-17 | 2013-11-20 | トヨタ自動車株式会社 | Headlamp device, brightness control method |
| DE102012200048A1 (en) | 2012-01-03 | 2013-07-04 | Robert Bosch Gmbh | Method and control unit for adjusting an upper headlight beam boundary of a headlight cone |
| FR2995267B1 (en) * | 2012-09-07 | 2016-02-05 | Valeo Vision | METHOD FOR CONTROLLING AN ADAPTIVE LIGHTING SYSTEM |
| CN105235582A (en) * | 2015-11-25 | 2016-01-13 | 北京经纬恒润科技有限公司 | Self-adaption headlamp control method and system |
| CN106793245B (en) * | 2016-11-22 | 2018-09-04 | 聊城市科特祥瑞新能源有限公司 | Light-operated LED car headlight control device |
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| US5952917A (en) * | 1996-04-20 | 1999-09-14 | Reitter & Schefenacker Gmbh & Co. Kg | Taillight fixture of a vehicle preferably a motor vehicle |
| US6379013B1 (en) * | 1999-01-25 | 2002-04-30 | Gentex Corporation | Vehicle equipment control with semiconductor light sensors |
| CN101083959A (en) * | 2004-12-10 | 2007-12-05 | 华沙整形外科股份有限公司 | Intervertebral prosthetic device and method with locking mechanism |
| CN101081607A (en) * | 2007-07-03 | 2007-12-05 | 清华大学 | Device for expand ing swerve eyeshot for driver |
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2008
- 2008-03-18 CN CN2008100064968A patent/CN101242696B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5952917A (en) * | 1996-04-20 | 1999-09-14 | Reitter & Schefenacker Gmbh & Co. Kg | Taillight fixture of a vehicle preferably a motor vehicle |
| US6379013B1 (en) * | 1999-01-25 | 2002-04-30 | Gentex Corporation | Vehicle equipment control with semiconductor light sensors |
| CN101083959A (en) * | 2004-12-10 | 2007-12-05 | 华沙整形外科股份有限公司 | Intervertebral prosthetic device and method with locking mechanism |
| CN101081607A (en) * | 2007-07-03 | 2007-12-05 | 清华大学 | Device for expand ing swerve eyeshot for driver |
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